some minor updates

Author: cynthiajoan

packages/firebase_ai/firebase_ai/lib/firebase_ai.dart

@@ -100,6 +100,8 @@ export 'src/imagen/imagen_reference.dart'
 export 'src/live_api.dart'
     show
         AudioTranscriptionConfig,
+        ContextWindowCompressionConfig,
+        GoingAwayNotice,
         LiveGenerationConfig,
         LiveServerMessage,
         LiveServerContent,
@@ -108,8 +110,8 @@ export 'src/live_api.dart'
         LiveServerResponse,
         SessionResumptionConfig,
         SessionResumptionUpdate,
+        SlidingWindow,
         SpeechConfig,
-        GoingAwayNotice,
         Transcription;
 export 'src/live_session.dart' show LiveSession;
 export 'src/schema.dart' show Schema, SchemaType;

packages/firebase_ai/firebase_ai/lib/src/live_session.dart

@@ -156,6 +156,14 @@ class LiveSession {
     );
   }
 
+  /// Resumes an existing live session with the server.
+  ///
+  /// This closes the current WebSocket connection and establishes a new one using
+  /// the same configuration (URI, headers, model, system instruction, tools, etc.)
+  /// as the original session.
+  ///
+  /// [sessionResumption] (optional): The configuration for session resumption,
+  /// such as the handle to the previous session state to restore.
   Future<void> resumeSession(
       {SessionResumptionConfig? sessionResumption}) async {
     await _wsSubscription.cancel();